The Flounder 



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moves from the dark to the light the eye conveys the impression to 

 the brain, which in turn sends it on to the cells all over the back, and 



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these open or close to make the back the same colour as the ground on 

 which the fish is resting. This changing of colour continues for a time 

 after the fish is dead, and may be seen by removing the fish from a 



